Abstract: Disclosed are a method and an input device for inputting information such as user commands to a computer a person wearing a virtual retinal display device that allows the person to concurrently see the real world.

Abstract: A tracking scanning laser optics device configured for mounting in headgear having at least one opening for positioning in front of an eye of a user includes a mounting unit, an invisible light source supported by the mounting unit for directing invisible light through a pupil, and at least one visible light source supported by the mounting unit for directing visible light through the pupil for writing on to the retina within a portion thereof scanned by 2-D scanning optics supported by the mounting unit. An imaging device supported by the mounting unit receives at least the invisible light reflected by the retina and stores an image thereof, and a calibration unit operative in conjunction with the 2-D scanning optics determines an origin in 2-D space for serving as a reference point for identifying a location of the portion within the retina.

Abstract: A tracking scanning laser optics device configured for mounting in hedger having at least one opening for positioning in front of an eye of a user includes a mounting unit, an invisible light source supported by the mounting unit for directing invisible light through pupil, and at least one visible light source supported by the mounting unit for directing visible light through the pupil for writing on the retina within a portion thereof scanned by 2-D scanning optics supported by the mounting unit. An imaging device supported by the mounting unit receives at least the invisible light reflected by the retina and stores an image thereof, and a calibration unit operative in conjunction with the 2-D scanning optics determines an origin in 2-D space for serving as a reference point for identifying a location of the portion within the retina.